hello my name is danny z. and i just grduated hvac school from the referigeration institute in manhatten. i went to a union shop and the first week went fine. the second week i was in a commercial building with a supervisor and mechanic and we changing filters in the airconditioning systems and i was going slow up and down the ladders and two filters where so high in the ceiling i could not reach them and i did not feel comfortable on the top rung of the ladder so the other mechanic had to change them. so after i go back to the shop the guy who hired me just said you had your hands in your pockets and you are not fit for this company and would not give me any explanation or second chance. i do not have experience in this field and maybe should i try referigeration? i am looking for a career but i am not used to ladders yet i am a hard worker and fast learner. would appreciate advice even if may have been my fault of not just going on the ladder??